The invention relates to a motor with an oil injection hole. The motor comprises a shell which is internally provided with a rotor shaft, a coil winding, a carbon brush holder and a worm wheel. The internal wall of the shell is provided with a magnet. One end of the rotor shaft is provided with helical teeth. The worm wheel is engaged with the helical teeth. The position, which is corresponding to the helical teeth of the rotor shaft, of the shell is provided with the oil injection hole. The oil injection hole is internally provided with a first sealing gasket and a second sealing gasket. The first sealing gasket and the second sealing gasket are axially and symmetrically arranged along the oil injection hole. The first sealing gasket and the second sealing gasket are abutted. The internal wall of the oil injection hole is provided with annular grooves. The first sealing gasket and the second sealing gasket extend into the annular grooves. The annular grooves are internally provided with a first spring used for resetting the first sealing gasket and a second spring used for resetting the second sealing gasket. With application of the technical scheme, the invention provides the motor with the oil injection hole, and lubricating oil can be directly added from the oil injection hole so that use is more convenient.